ADLINK Express-HL2 - Manual (Page 60)

Page 60 Express-HL2
7.3.7 PCI and PCIe
Feature Options Description
PCI Common Settings Info only
PCI Latency Timer 32 PCI Bus Clocks
64 PCI Bus Clocks
96 PCI Bus Clocks
128 PCI Bus Clocks
160 PCI Bus Clocks
192 PCI Bus Clocks
224 PCI Bus Clocks
248 PCI Bus Clocks Select the PCI latency defined in PCI Bus clock cycles
VGA Palette Snoop Disabled
Enabled Allow PCI cards that do not contain their own VGA color palette to
access the video core’s palette
PERR# Generation Disabled
Enabled Enables or Disables PCI Device to Generate PERR# .
SERR# Generation Disabled
Enabled Enables/Disables PCI Device to Generate SERR# .
PCI Express Settings
Relaxed Ordering Disabled
Enabled Enables/Disables PCI Express Device Relaxed Ordering .
Extended Tag Disabled
Enabled If ENABLED allows Device to use 8-bit Tag field as a requester .
No Snoop Disabled
Enabled Enables/Disables PCI Express Snoop option
Maximum Payload Auto
128 Bytes
256 Bytes
512 Bytes
1024 Bytes
2048 Bytes
4096 Bytes Select Maximum Payload size or let BIOS decide (Auto)
Maximum Read Request Auto
128 Bytes
256 Bytes
512 Bytes
1024 Bytes
2048 Bytes
4096 Bytes Set Maximum Read Request Size of PCI Express Device or allow
System BIOS to select the value
.
ASPM Support
Warning: Enabling ASPM may cause some PCI-
E devices to fail
Disabled
Auto
Force L0S Set the ASPM Level . Disabled - Disables ASPM .
Auto - BIOS auto configure
Force L0S - Force all links to L0s State
Extended Synch Enabled
Disabled If enabled the generation of PCI Express synchronization patterns is
allowed
Link Training Retry Disabled
2
3
5 Defines number of Retry Attempts software will take to retrain the
link if previous training attempt was unsuccessful
.
Link Training Timeout (uS) 100 Defines number of microseconds software will wait before polling
'Link Training' bit in Link Status register
. Value range from 10 to
10000 uS .
Unpopulated Links Keep Link ON
Disable In order to save power, software will disable unpopulated PCI
Express links, if this option set to 'Disable Link'
.